Let $\displaystyle a=2n-1$ and $\displaystyle b=2n+1$ be the 2 consecutive odd prime numbers.
$\displaystyle a+b=4n$
The first and four prime numbers are 2 and 7.
So their product is 14, their square is 196.
So $\displaystyle a+b=4n=196$
solve for n
I thought the 4 consecutive odd prime numbers were x, x + 2, x + 4, x + 6 and so on. But then I saw the words PRIME NUMBERS and that changes the whole thing, right?